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检查法是一种集约的异龄林的经营法。它由Gurnaud 和Biolley发明,并由后者用于瑞士。正常的异龄林,不同径级林木都有,它们生活在林中不同的层次上,吸收不同波长的光谱,充分利用营养空间的肥力,产生较高的生产能力,还能充分发挥森林的多种功能,改善土壤结构,森林病虫不致大面积流行等。检查法的实施目的是使异龄林能够永续作业。在经营中,边采伐、边检查、边调整。采伐量主要由林分的蓄积生长控制。蓄积生长量定期测定,用以代替连年生长量,并据此研究确定经理期期间的择伐量。收获的同时,调节林分内的径级株数分布,不同径级的蓄积比重,针阔林木混交比例等,逐渐使经营的林分达到最优的结构—每公顷单位面积上生产出最多的木材。
Inspection method is an intensive management of different age forest. It was invented by Gurnaud and Biolley and used by the latter in Switzerland. Normal heterogeneous forest, different diameter forest have, they live in different levels in the forest, absorb the spectrum of different wavelengths, make full use of the fertility of nutrient space, resulting in higher production capacity, but also give full play to the forest more Function, improve the soil structure, forest pests and diseases will not cause large-scale epidemic. The purpose of the inspection is to make the different age forest work continuously. In business, while cutting, while checking, while adjusting. The amount of cutting is mainly controlled by the accumulation and growth of the stand. Accumulation growth is measured on a regular basis to replace successive years of growth and to study and determine the amount of selective cutting during the manager’s period. Harvest at the same time, adjust the diameter distribution of the number of branches in the forest, the different diameter classes of the proportion of accumulation, broad-leaved forest mixed ratio, and gradually to achieve optimal management of the structure of the forest - per hectare per unit area to produce the largest timber .